Consider the hydrogen atom as a one dimensional box with a length of 106 pm. Calculate the wavelength of radiation emitted when its electron transitions from the ������=3 state to the ������=2 state.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

How many moles are in 123.0 grams of kclo4?

Wind and moving water provide energy. chemical mechanical thermal none of the above